New New Homeowner - Laying Pre adhesive Tiles

Hello-
New to the forum as well as home ownership. Been doing alot of work on the house (replacing floors, appliances, changing fixtures, painting, staining, etc).
Looking to get a little more indepth, the next projext is to lay pre adhesive tile in the laundry room. Its a temporary permanent solution until I save up money to completly renovate kitchen/laundry room.
I have completly cleaned the concrete floor with Zep Cleaning Product. The floor is fairly flat, not perfect but ok. Do I need to either apply leveling compound and/or a sealer? If so which and what brands?
Any tips/advice are appreciated.

New New Homeowner - Laying Pre adhesive Tiles

Not going to find many peel and stick fans here. It's the lowest of the low grade flooring products.
Very hard to install and keep a straight line because it trys to stick so fast and there's no adjustment.
I will show every flaw if the is any under it.
I tends to shrink and gaps open up.
Over time some pieces will come loose.

If it's temperary they have linolium sheet flooring that does not need to be glued down.
One piece flooring is a good idea in a laundryroom to help prevent water damage.

New New Homeowner - Laying Pre adhesive Tiles

Thanks guys. Its definetly temporary. I unfortunately already bought the tires and do.not have the receipt anymore to return. The only people who would see the room would've my wife and I. Can they just stick directly onto the concrete?